Remove/install differential assembly

AR35.30-W-0432H

Remove/install differential assembly

12.4.10



Removing



Notes on evaluating leakages

AH00.00-N-0011-01A

1

Remove propeller shaft

 Only detach propeller shaft from differential assembly and support propeller shaft.

AR41.10-W-0050A

2

Mechanically locking differential lock

AR35.40-W-0700A

3

Remove bell hub with left and right rear axle shaft

AR35.20-W-0270A

4

Detach temperature sensor plug (1)

 Only with maintenance system (WS).

5

Detach compressed-air line (10)

6

Unscrew bolt (9)

 Only with differential lock and 233 mm dia. ring gear.

7

Remove cover (7)

 Only with differential lock and 233 mm dia. ring gear.

8

Unscrew 2 bolts (3)

 Only with differential lock and 233 mm dia. ring gear.

9

Reinstall cover (7)

 Only with differential lock and 233 mm dia. ring gear.

10

Screw in bolt (9) again

 With differential lock only. The differential lock is locked mechanically as a result.

11

Attach removal and installation device to the differential assembly (2) and insert into the support of the inspection pit lift

 It is absolutely essential to use the removal and installation device otherwise the differential assembly (2) will fall out of the axle housing in an uncontrolled manner.

AR35.30-W-0432-01D

12

Remove differential assembly (2)

 Unscrew remaining bolts (3) and remove differential assembly (2).

13

Lift the differential assembly (2) out of the support of the inspection pit lift and detach the removal and installation device



Install

14

Attach removal and installation device to the differential assembly (2) and insert into the support of the inspection pit lift

 The differential lock must be mechanically locked.

AR35.30-W-0432-01D

 It is absolutely essential to use the removal and installation device otherwise the differential assembly (2) cannot be installed in a controlled manner.

15

Clean sealing surfaces on axle housing and on differential assembly (2) and coat with sealant

*BR00.45-Z-1015-01A

16

Insert differential assembly (2) into the axle housing and screw in 4 opposed bolts (3)

 This prevents the differential assembly (2) from falling out.

17

Detach removal and installation device and screw in the remaining bolts on the circumference of the differential assembly (2)

 With the differential lock and 233 mm dia.ring gear the 2 bolts (3) are installed in the area of the differential lock in step 19.

 Rear axle 748.26/27

*BA35.30-N-1001-03A

 Rear axle 748.706/708

*BA35.30-N-1001-03B

18

Unscrew bolt (9) and detach cover (7)

 Only with differential lock and 233 mm dia. ring gear.

19

Tighten 2 bolts of differential assembly in the area of the differential lock

 Only with differential lock and 233 mm dia. ring gear.

 Rear axle 748.26/27

*BA35.30-N-1001-03A

 Rear axle 748.706

*BA35.30-N-1001-03B

20

Install cover (7) with new gasket (6)

 Install gasket (6) with the raised bead towards the cover (7).



*BA35.40-N-1002-01A

21

Screw in bolt (9)

 The differential lock is locked mechanically.

22

Install compressed-air line (10) with new sealing rings (5)

23

Install temperature sensor plug (1)

 Only with maintenance system (WS).

24

Install bell hub with left and right rear axle shaft

 The differential lock must remain locked mechanically.

AR35.20-W-0270A

25

Unlock the differential lock mechanically

AR35.40-W-0700A

26

Install propeller shaft

AR41.10-W-0050A

Number

Designation

Rear axle 748.26/27
without through-drive, ring gear Ø 233 mm

BA35.30-N-1001-03A

Bolt for axle housing to axle housing

M121.5

12,9

Serrated bolt

Nm

190

Flat collar bolt

Stage 1

Nm

35

Stage 2

°

90

Hexagon bolt
In area of diff. lock

Nm

-

Corrugated fin bolt

Stage 1

Nm

-

Stage 2

°

-

Number

Designation

Rear axle 748.26/27
without through-drive, 300 mm dia. ring gear

BA35.30-N-1001-03A

Bolt for axle housing to axle housing

M121.5

12,9

Serrated bolt

Nm

190

Flat collar bolt

Stage 1

Nm

35

Stage 2

°

90

Hexagon bolt
In area of diff. lock

Nm

-

Corrugated fin bolt

Stage 1

Nm

210

Stage 2

°

30

Number

Designation

Rear axle 748.706, (NAG), without through-drive, 233 mm dia. ring gear

Rear axle 748.708, (NAG), without through-drive,
300 mm dia. ring gear

BA35.30-N-1001-03B

Bolt for axle housing to axle housing

M121.5

12.9

Serrated bolt

Nm

200

-

Flat collar bolt

Nm

145

145

Hexagon bolt
In area of diff. lock

Nm

111

111

Corrugated fin bolt

Nm

-

-

Number

Designation

Rear axle
748.2

Rear axle
748.7

BA35.40-N-1002-01A

Bolt, differential lock shift cylinder to differential assembly

Nm

25

25

Number

Designation

Order number

BR00.45-Z-1015-01A

Loctite 5203 sealant

A 002 989 71 20 10